feat: better debugger (#13)

- create centralized structured logger with rotation
(https://github.com/versenilvis/IRIS/commit/96ad7c95ef0f7a9957b1bbf70bb6c8da3ce28b2e)
- update core lookup and utils to use new logger
(https://github.com/versenilvis/IRIS/commit/8b74b5a9cdc1828cff8c6d0bdaaccbe31da7a00a)
- add log startup metadata and propagate reload flags
(https://github.com/versenilvis/IRIS/commit/31208aa91a58e9e09abbf5497c314f5c961a58e2)
- add log key interceptions and pty events
(https://github.com/versenilvis/IRIS/commit/91ccb92835dd16ee70bf630fe0f267aad93c9db0)
- add test for logger 221a40c893b75e6215787163cd751a4c1cb6c1d8
- secure reload arguments file path to prevent symlink attacks
(https://github.com/versenilvis/IRIS/pull/13/commits/c3eabfda451230e52cb71f0c2a556687f839bd3f)
- close log file on reinitialization to prevent descriptor leak
(https://github.com/versenilvis/IRIS/pull/13/commits/a57d2c9be107a8c6200cf7046cc85b2f58667dce)

commands/core/lookup.go

@@ -5,6 +5,7 @@ import (
 	"sync"
 
 	"github.com/versenilvis/iris/integration/shell"
+	"github.com/versenilvis/iris/logger"
 )
 
 var (
@@ -103,7 +104,7 @@ func Lookup(input string) []Suggestion {
 
 	rootCmdName := tokens[0]
 	spec, exists := Registry[rootCmdName]
-	debugLog("[core] lookup tokens: %v, registry exists: %v", tokens, exists)
+	logger.Debugf("core lookup tokens: %v, registry exists: %v", tokens, exists)
 	if !exists {
 		return nil
 	}
@@ -174,8 +175,8 @@ func Lookup(input string) []Suggestion {
 	partial := tokens[len(tokens)-1]
 	allowMoreArgs := currentLimit <= 0 || argCount < currentLimit
 
-	debugLog("[core] query tokens: %v (partial: '%s')", tokens, partial)
-	debugLog("[core] depth: %d, argCount: %d, limit: %d, allowMore: %v", depth, argCount, currentLimit, allowMoreArgs)
+	logger.Debugf("core query tokens: %v (partial: '%s')", tokens, partial)
+	logger.Debugf("core depth: %d, argCount: %d, limit: %d, allowMore: %v", depth, argCount, currentLimit, allowMoreArgs)
 
 	prefixBuilder := strings.Builder{}
 	for i := 0; i < depth; i++ {

commands/core/utils.go

@@ -1,19 +1,9 @@
 package core
 
 import (
-	"fmt"
-	"io"
 	"strings"
 )
 
-var DebugWriter io.Writer
-
-func debugLog(format string, a ...any) {
-	if DebugWriter != nil {
-		_, _ = fmt.Fprintf(DebugWriter, format+"\n", a...)
-	}
-}
-
 // SplitAliasTokens parses the input string into shell-like tokens handling quotes
 // example: SplitAliasTokens("git commit -m \"hello world\"")
 func Tokenize(s string) []string {